Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
searg
←
Manx
shirg
(cognate)
←
Old Irish
sergaid
(inherited)
←
Old Irish
seircid
(mention)
←
Old Irish
serg
(mention)
→
Manx
shirgey
(cognate)
→
Manx
shirg
(cognate)